Planetary hours
in Białystok.
The day, from sunrise to sunset, is cut into twelve equal hours; so is the night, from sunset to the next sunrise. Each hour carries a planet, in the Chaldean order. A planetary hour therefore lasts 60 minutes only at the equinoxes: it all depends on the date and the city. Here are the exact hours for your city; what you do with them is up to you.
Planetary day of Saturday, 17 May 2025: day of Saturn
- Sunrise
- 04:25
- Sunset
- 20:23
- Next sunrise
- 04:23
A day hour lasts 1h 20m; a night hour, 40 min. Local time (Europe/Warsaw).
Day
- 1♄︎ Saturn04:25 – 05:45
- 2♃︎ Jupiter05:45 – 07:04
- 3♂︎ Mars07:04 – 08:24
- 4☉︎ Sun08:24 – 09:44
- 5♀︎ Venus09:44 – 11:04
- 6☿︎ Mercury11:04 – 12:24
- 7☽︎ Moon12:24 – 13:44
- 8♄︎ Saturn13:44 – 15:03
- 9♃︎ Jupiter15:03 – 16:23
- 10♂︎ Mars16:23 – 17:43
- 11☉︎ Sun17:43 – 19:03
- 12♀︎ Venus19:03 – 20:23
Night
- 1☿︎ Mercury20:23 – 21:03
- 2☽︎ Moon21:03 – 21:43
- 3♄︎ Saturn21:43 – 22:23
- 4♃︎ Jupiter22:23 – 23:03
- 5♂︎ Mars23:03 – 23:43
- 6☉︎ Sun23:43 – 00:23
- 7♀︎ Venus00:23 – 01:03
- 8☿︎ Mercury01:03 – 01:43
- 9☽︎ Moon01:43 – 02:23
- 10♄︎ Saturn02:23 – 03:03
- 11♃︎ Jupiter03:03 – 03:43
- 12♂︎ Mars03:43 – 04:23
Other cities · Poland
Questions
How are the planetary hours calculated in Białystok?
On Saturday, 17 May 2025, the Sun rises at 04:25 and sets at 20:23: the day lasts 15h 58m, that is twelve day hours of 1h 20m. The night, until the next sunrise at 04:23, lasts 8h 01m: twelve night hours of 40 min.
Which planet rules the first hour that day?
Saturn, from 04:25 to 05:45: the first hour of a day always goes to the planet of the weekday. The next ones follow the Chaldean order: Jupiter, Mars, the Sun, Venus, Mercury, the Moon, then Saturn again.
Today’s sky, on YOUR chart
Planetary hours are the same for everyone in a city. Your chart is yours alone: every morning AstroXP crosses the real sky with your birth, to the minute, and tells you what time it plays out for you.
On a computer? Scan this code with your phone.
Calendars
Sunrise and sunset calculated for the city (the Sun’s centre 0°50′ below the horizon: refraction and semi-diameter), local time of the city’s time zone. Checked against astronomy-engine, the app’s engine.